Results 101 to 110 of about 187,468 (290)

Synthesis and Application of Bioactive N‐Functionalized Aziridines

open access: yesAngewandte Chemie, Volume 137, Issue 44, October 27, 2025.
This review discusses modern synthetic methods for the preparation of aziridine‐containing small molecules, including biocatalytic, electrocatalytic, and photocatalytic strategies. We highlight the compatibility of various synthetic methods with control of the exocyclic N‐substituent.
Hao Tan   +4 more
wiley   +1 more source

Amine-Promoted Alkene Aziridination

open access: yes, 2011
Aziridines, the smallest saturated aza-heterocycle, are not only prevalent in several natural products, but also represent a versatile synthetic tool for the chemist via exploitation of the strained ring system. Research described in this thesis concerns
Pullin, Robert David Charles   +1 more
core   +1 more source

CUANTIFICACIÓN DE ALCALOIDES DE Ladenbergia oblongifolia (HUMB. EX MUTIS) L. ANDERSSON “ÁRBOL DE LA QUINA”

open access: yesREBIOL, 2021
Dentro de la megafitodiversidad del Perú, se enmarcan muchas especies de los géneros Cinchona, Ladenbergia y Remijia; conocidas indistintamente por los pobladores de las Comunidades andino-amazónicas como “árboles de la quina”, “quina” o “cascarillas” y ...
Segundo E. López Medina   +5 more
doaj  

Professor Dragendorffi teadustegevuse jäljed Tartu Ülikooli ajaloo muuseumi kogudes [PDF]

open access: yes, 2013
Evidence of Dragendorff’s scientific work inThe University of Tartu History MuseumCollectionsJ. G. N. Dragendorff (20.04.1836 – 26.03.1898) was a Professor of Pharmacy at the University of Tartu from 1864 to 1894.
Sisask, Sirje
core   +3 more sources

Current status of herbal and their future perspectives [PDF]

open access: yes, 2007
Traditional medicine is the synthesis of therapeutic experience of generations of practicing physicians of indigenous systems of medicine. Throughout the history of mankind, many infectious diseases have been treated with herbals.
Ponnampalam Gopalakrishnakone   +1 more
core   +1 more source

Chiral separation by enantioselective liquid–liquid extraction [PDF]

open access: yes, 2011
The literature on enantioselective liquid–liquid extraction (ELLE) spans more than half a century of research. Nonetheless, a comprehensive overview has not appeared during the past few decades.
Feringa, Ben L.,   +5 more
core   +3 more sources

Amine-Catalyzed Decarboxylative Aldol Reaction of β-Ketocarboxylic Acids with Trifluoropyruvates

open access: yesMolecules, 2019
Decarboxylative aldol reaction of aliphatic carboxylic acids is a useful method for C−C bond formation because carboxylic acids are an easily available class of compounds. In this study, we found that the decarboxylative aldol reaction of tertiary &
Ryouta Kawanishi   +3 more
doaj   +1 more source

Quinidine-Catalysed Enantioselective Synthesis of 6- and 4-Trifluoromethyl-Substituted Dihydropyrans [PDF]

open access: yes, 2016
The authors thank the Royal Society for a University Research Fellowship (ADS) and the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013), ERC Grant Agreement No. 279850 (KK), the authors also thank the EPSRC
Ashtekar   +48 more
core   +1 more source

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